70729700 has 36 divisors (see below), whose sum is σ = 155602020. Its totient is φ = 27901440.

The previous prime is 70729697. The next prime is 70729709. The reversal of 70729700 is 792707.

It can be written as a sum of positive squares in 6 ways, for example, as 438244 + 70291456 = 662^2 + 8384^2 .

It is not an unprimeable number, because it can be changed into a prime (70729709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2456 + ... + 12144.

Almost surely, 2^70729700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70729700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77801010).

70729700 is an abundant number, since it is smaller than the sum of its proper divisors (84872320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70729700 is a wasteful number, since it uses less digits than its factorization.

70729700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776 (or 9769 counting only the distinct ones).

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 70729700 is about 8410.0951243134. The cubic root of 70729700 is about 413.5556310878. Note that the first 3 decimals are identical.

The spelling of 70729700 in words is "seventy million, seven hundred twenty-nine thousand, seven hundred".